Gas heater



. 20, 1929. J. SCHOENFELD 1,725,162

GAS HEATER Filed Sept. 22, 1926 5 Sheets-Sheet l k INVENTOR.

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1929- J. SCHOENFELD 1,725,162

GAS HEATER Filed Sept. 22, 1926 3 Sheets-Sheet INVEN TOR.

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Aug. 20, 1929. .1. SCHOENFELD GAS HEATER Filed Sept. 22, 1926 5 Sheets-Sheet 5 1, I: H Mpg ILFEE I m NDN fidwyzl? INVENTOR.

Patented Aug. 20, 1929.

UNITED STATES JOSEPH SCHOENFELD, OF ALAMEDA, CALIFORNIA.

GAS HEATER.

Application filed September 22, 1926. Serial No. 136,948.

his invention relates to gas heaters such as are adapted to be placed in a room or like place to be heated and especially to a heater which will serve both as a radiation and air circulating heater. 1

The object of the presentinvent-ion is to generally improve and simplify the construction and operation of gas heaters to increase their general efliciency and utility; to so construct a heater that all gases and products of combustion may be thoroughly vented; to provide a glow section'consisting of a thin section of metal or the like which may be heated to a glowing temperature by the burner; to provide a reflector adapted to cooperate therewith, whereby both the heat and light rays radiating therefrom may be projected into the room and further to provide means whereby air may be freely circulated through the heater and'heated and directed into the room.

One form which the invention may assume is shown by way of illustration in the accompanying drawings, in which:

Figure 1 is a front view of the heater,

Figure 2 is a cross section taken on the line IIII of Figure 1,

Figure 3 is a longitudinal section.

Referring to the drawings, in detail, it will be noted that the heater consists of a housing generally indicated at A. This housing consists of a back section 2, a top or grill section 3, a front section 4 and an intermediate section 5, which is interposed between the grill and the front section, the section 5'being a reflector as will hereinafter be described.

Cooperating with the front section 4 and disposed intermediate said section and the back section 2 is an intermediate back section 6. This back section divides the housing into two chambers generally indicated at 7 and 8. The chamber 7 will hereinafter be referred to as the combustion chamber and the chamber 8 as the air circulating chamber.

' Mounted interior of the combustion chamber and extending substantially from end to end thereof, as shown in Figure 3, is a gas burner 9 of suitable construction, gas being supplied to the burner from an exterior source such as a pipe 10 and the flow of gas being regulated by means of a valve 11.

The burner is also provided with a mixing chamber generally indicated at 12. As in usual practice, air and gas mixes in the chamber and enters a lower section 13. This section is connected with the upper or burner of combustion escape through a duct or flue 17 which forms a part of the back plate 6.

The housing, as a whole, is supported by front and rear legs, as indicated at 18 and 19, respectively, and the exterior finish is such as to produce the best ornamental effects.

The several sections of the burner so far described are supported between the ornamental end plates 20 of which the front and rear legs 18 and 19 form a part. The several sections 2, 3, 4, 5, etc., are secured between the end plates by supporting flanges 21 or the like and screws 22. Formed in the upper face of the front section 4 is a rectangular shaped elongated opening 16*. This opening extends substantially from end to end of the section 4 and it is covered or closed by means of the glow plate 16, previously referred to. This plate consists of a thin sheet of nichrome metal, Monel metal or a like metal or material which resists oxidation under high temperatures, for instance, nichrome can safely reach a temperature of approximately 1800 F., before oxidation becomes noticeable. Monel may similarly stand high temperatures and so may other materials. employed, it may be as thin as five or six thousandths of an inch.

A thin sheet of metal subjected to the direct flame of the burner assumes a glowing tem- If nichrome is 1 perat'ure and as such radiates both'light and heat rays. It will be noted that the plate 16 is slightly inclined and so is the reflector 5. By proper shaping of the reflector and the correct inclination, practically all the heat and light rays radiated will be projected in a forward direction and all the radiated energy is thus directed forwardly into the room, and at the same time, a pleasing effect is obtained as the entire reflector appears to be in a glowing condition.

Air to support combustion within the chamber 7 is admitted through an elongated slot 23 formed in the bottom portion of the front plate 4. The air entering through this slot also supplies the mixing chamber 12, as it enters the mixing chamber through theopenings indicated at '24 (see Figure 2). The products of combustion as specifically stated escape through the tube or vent 17 and as this may be connected with a suitable flue all gases and products of combustion will be carried away and danger of polluting the atmosphere of the room or dwelling is entirely eliminated. The air circulating and heating chamber 8 is supplied with air through an elongated slot 25 extending from end to end of the bottom section. This air rises upwardly through an air passage 26 and enters the chamber 8 from where it discharges through a series of openings 3 in the grill 3. The heated air thus enters the room and is not polluted with any of the products of combustion.

In actual practice, it should be realized that the walls of the combustion chamber and particularly the rear section 6 and the por tion indicated at 6 become exceedingly hot and that it is this heat which is depended upon to heat the circulating air. To promote conduction of heat from these surfaces to the air passing through the passages 8 and 26, fins or flanges are cast both on the inner and rear surfaces of the plate 6. The inner fins or flanges are indicated at 28 and the rear flanges at 29.

The inner flanges conduct the heat to the plate 6 and the heat is there conducted to the fins or flanges 29 which are in direct contact with the circulating air. In this manner practically all the B. t. us. of the fuel is absorbed and conducted to the air and high efficiency is obtained, the efliciency being further increased by the projection of the heat and light radiating from the glow plate 16.

By referring to Figure 2, it will be noted that insulating material such as indicated at 35 is interposed between the edges of the plate 16 and the casting supporting the same. This is important as it materially reduces heat conduction losses and to that extent increases the radiating efficiency of the plate.

While certain features of the present invention are more or less specifically described, I wish it understood that various changes maybe resorted to within the scope of the appended claims. Similarly that various materials and finishes of the several parts employed may be such as the manufacturer may decide or varying conditions or uses may demand.

Having thus described my invention, what of combustion, and a discharge flue in communication with the housing to carry away the products of combustion.

2. In a heater of the character described, a housing having an opening formed therein, a gas burner within the housing and below said opening, an imperforated plate of thin material covering said opening and adapted to be heated to a glowing temperature by the flame of the burner to radiate heat and light rays, and a reflector disposed exterior of the casing and cooperating with the plate to project heat and light rays radiating therefrom.

3. In a heater of the character described, a housinghaving an opening formed therein, a gas burner within the housing and be low said opening, an imperforated plate of thin material covering said opening and adapted to be heated to a glowing temperature by the flame ofthe burner to radiate heat and light rays, a reflector disposed exterior of the casing and cooperating with the plate to project heat and light rays radiating therefrom, and a discharge flue in communication with the housing to carry away the products of combustion.

4. In a heater of the character described, a housing having an opening formed therein, a gas burner within the housing and below said opening, a plate of thin material covering said opening and adapted to be heated to a glowing temperature by the flame of the burner, a reflector disposed exterior of the casing and cooperating with the plate to project heat and light rays radiating therefrom, a discharge flue in communication with the housing to carry away the products of combustion, and a second housing partially enclosing the first-named housing, said housing having openings formed in the top and bottom thereof to permit an upward circulation of air. V

5. In a heater of the character described, a housing having'an opening formed therein, a gas burner within the housing and below said opening, a plate of thin material covering said opening and adapted to be heated to a glowin temperature by the flame of the burner, a reflector disposed exterior of the casing and cooperating with the plate to project heat'and light rays radiating therefrom, a discharge flue in communication with the housing to carry away the products of combustion, a second housing partially enclosing the first-named housing, said housing culating air.

JOSEPH SCHOENFELD. 

